//通用类
.contents {
	display: flex;
	flex-direction: column;
	align-items: center;
	padding:1vw; 
    background-color: rgba($color: #f4f4f5, $alpha: 0.5);
}

//布局
$xy-component-width:95vw; //通用宽度
$xy-component-ud-margin:1vh; //组件上下通用外边距
$xy-component-ud-padding:1vh; //组件上下通用内边距
$xy-component-but:7vh //按钮背景大小

